Re: Noumea hongkongiensis?

March 21, 2000
From: Yasuhiro Shirai

Dear Bill,
Thank you for your reply about Noumea sp. I attach another photo( same individual) in this mail.

When I saw this animal, color of gills and rhinophores were reddish-pink. Is this Noumea hongkongiensis?.

Best regards,
Yasuhiro Shirai

Shirai, Y., 2000 (Mar 21) Re: Noumea hongkongiensis?. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

Dear Yasuhiro,
I am glad you sent me this photo of the head. from the shape of the large rounded lobes on either side of the head I don't think this is a chromodorid at all. There is a genus of nudibranch, Diaphorodoris [Family: Onchidorididae], which look quite like chromodorids, and the differences may not be clear in juveniles such as this animal.

I am afraid that unless I could see the radula of this animal I could not easily identify it. It is either a chromodorid with a very strangely developed head or possibly an onchidorid.

Best wishes,
Bill Rudman.

Rudman, W.B., 2000 (Mar 21). Comment on Re: Noumea hongkongiensis? by Yasuhiro Shirai. [Message in] Sea Slug Forum. Australian Museum, Sydney. Available from

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